Sheet-delivery apparatus for printing-machines.



H.- M.BARBBR.

' SHEET DELIVERYAPPARATUS FOR PRINTING MACHINES.

APPLICATION I IIED FEB. 16, 1911. A

'j Patented Sept. 16, 1913.

2 SHEETS-SHEET 1.

v H. M. BARBER. SHEET DELIVERY APPARATUS FOR PRINTING MACHINES.

E APPLICATION FILED FEB.16, 1911.

1,073,317, v Patented Sept. 16, 1913.

2 SHEETS-SHEET 2.

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. sfraf'rns rgrnnr 'torsion'.

ROWABJD M. BARBER, 0F SlTONINGTON, CO'NNEGTIQCU'E, ASSIGNOB. TU C. B.COTTREJL SONS CQMBNYQF NEW YQRiK, N. Y., A CORPORATIN 0F l:MEET JERSEY.

K SHEET-DELIVERY APPARATUS' FDR PRINTING-MACHINES.-

.. /Spec'cation of Letters Patent.

Patented Sept. 16, 1913.

.appli-nation led Eehruery 16, m11. Serial En. $99,611.

tween a delivery carrier and -a sheet feeding' tape carrier, the saidsheet support being arranged to travel forward with the sheet as thesheet is advanced ley 'the delivery carrier so as to support the rearportion of the sheet until the sheet is about to be released byv thedelivery carrieig'the said sheet sup portbei'ng arranged to be Withdrawnfrom beneath the sheet for permitting the sheet to drop bodily onto thepile of sheets.

This linvention is more particularly applicable for use in connectionwith the sheet delivery apparatus shown, described and claimed in mycopending application, led June 8, 1,909', Serial No. 5008?'8, asnEcient portion ot said apparatus'being shown 'and describedherein togive a clear understanding of the construction, arrangement andoperation of' my improved reciprocating sheet support. l'

In the' accompanying drawings, Figure 1 is a view in longitudinalvertical section of" portions of a tworevolntion cylinder printingmachine having my reciprocating sheet support applied thereto, the sheetsupport'heing shown at the limit of its return stroke, Fig. 2 is apartial transverse vern tical section taken inthe ple-neef the linev A-Aof Fig. 1, the sheet receiving table and pile of sheets hein removed,and Fig. 3 is aragmerrtary longitudinal vert-ica see tien similar toFig. 1, showing the reciproeatingshect support at the limit of its for.`wail'd movement over the sheet receiving tab e.

The form cylinder denoted by 1 and its impression cylinder by 2. Theforni cylinder gear 3 is driven from a 4 on the drive shaft 5, whichshaft mv loe driven is driven from the form cylinder 1 through i thegears 8, 9. The sheet receiving table is denoted by The endless sheetdelivery carrier-is donoted by 12 and may he driven at the requiredspeed by any desired mechanism not from a suitable motor 6. The' camshaft-7..`

10 and' the' pile of sheets thereon4 shown herein. The endless deliverycarrier-- l may be provided with one or morev sets of sheet grippers 13,which are opened by the cam-s 14 in thensual manner to receive theadvancey ed 'of the sheets asv they are fed from the inmediatelydescribed. These grippcrs are also arranged to he opened forlepositingii` the sheets onto the table 10 by means not shown herein.

The means for conveying the sheets from livery carrier 12 comprises atape carrier 15 driven from the impression cylinder gear 16 through theintermediate gears 17, 18. 'The outer ends of the tapes of the tapecarrier 15 pass around pulleys 19 located adjacent to the inner end ofthe endless delivery carrier.

Sheet feeding rolls 20 21, are provided at `the inner end of the tapecarrier for engag4 ing the sheets as they leave the impression cylinder2. A positive sheet forwarding device 22 is located intermediate theinner and onteiends of the tape carrier l5, which device is arranged toengage the sheet as it eet feeding tape carrier to' bel the impressioncylinder 2 to the sheet de-` I earn shaft 7 thro/ugh a cam 23, bar 24,stud y Q5, arm 26 and rock shaft 27.

In the arrangement 'of the parts as herein shown, the endless tapecarrier travels at the surfacespeed of the impression cylinder V and ata. speed one and one-half times fas ter than the endless deliverycarrier butit is to be understood that this particular relationship inthe speed and movement of the several devices is not important to thispres ent invention and forms no part thereof.

This present invention is directed to the *reciprocating sheet supportwhich will now be specifically described.

i' A .series vof horizontally arranged sheet supporting racks 28 aremounted to slide forwardly and rearwardly -in a plurality of brackets 29supported upon a cross bar y 30 and a' rotary cross'shaft 31. Theseracks jected a considerable distance over thes eet- 28 have an extendedsupport in their' brackets 29 and are heldy in ositon by :my suitablearrangement such, or instance, as givmg these bars .an .undercut slidingengagement with theirl 'brackets as will be clearly seen by referring toFig. 2. These racks 28 are of sufiicient length to be rol trolled by acam 36, thegroove 37 of which cam, in which the stud or roller 38 on theba'r 35 is locatedbei`ng so arranged that the cam will impart a forwardmovement to the sheet support at a speed corresponding substantially tothe speed of the delivery carrier 12 and will impart a rapid returnmovement to the .sheet support for withdrawing it from beneath the.sheet in time to permit the -sheet to be dropped onto thesheetreceiv'ing Atable 10. The rack 34 of the bar 35 may beheld inengagement with the pinion 33 by a roller 39 along which the rackslides. The operation of the apparatus is, as follows z-As the-sheetleaves the impression cylinder 2 it is forwarded by the rolls 20, 21,the tape carrier 15 and the positive sheet forwarding device 22 intoposition tobe engagedlby the grippers 13 on thesheet, de-

- livery carrier 12.- As the sheet is drawn out by the grippers 13 overthe sheet receivln'g table 10, the reciprocating sheet support .willalsobe advanced for supporting the sheet and preventing the center of thesheet from dropping vdown and dragging along thel pile of previouslyVdeposited sheets. When the'leading ed e of the sheet sheet support 'willcommence to withd free to fall onto the receiving 'table as the iswithin a short distance of t e point where.

it is to be released bythe grippers 13, the raw from under thesheetithus leaving the sheet grippers 13 release the leading edge of thesheet. As has hereinbefore been explained,- the withdrawing or returnmovement of thez sheet su port is rapid so as to linsure the free fal ofthe sheet ontothe receiving table. 3

It is evident that changes. may be resortedto in the, form,gconstructionand arrangement-of the several parts withoutv de parting from the spiritand scope of my in'- vention; hence I do not wish to limit my'- p selfstrictly to the structureherein set forth, but

What I claim is 1. In a sheet delivery apparatusv for printing machines,a' sheet receiving table, a delivery carrier .arranged to draw the sheetout over. the table and then release the sheet, means for feeding thesheet to the delivery carrier and a bodilyreciprocating sheet supportVarranged to travel part way out over the table'with the sheet and to be'withdrawn from ybeneath the rear portion of the sheet as it is releasedby the delivery carrier, for permitting the sheet to fall freely ontothe receiving table.

2. In a sheet delivery apparatus for printing machines, al sheetreceiving t'able, an endless delivery carrier having the grip ersarranged ytoenga e the advance edge o the sheet and draw the sheet outover the table and then release the sheet, .means for feedp ing thesheet to the delivery carrier grippers and a bodily reciprocating sheetsupport arrangedto travel part way out over the table with the sheet andto be with- `drawn from beneath the rear portion of the sheet as it isreleased by the delivery carrier grippers, for permitting the sheet tofall freely onto the receiving table.

3. In a sheet delivery apparatus for printing machines, a sheetreceiving table, a relatively fixed endless delivery carrier, arelatively fixed endless tape carrierfor feeding sheets thereto, abodily reciprocating sheet support4 interposed between. 'the deliverycarrier and tape carrier and means for movloo lot

ing the sheet support partway out over the tablewith the sheet and forwithdrawing the sheet support from beneath the rear portion of the sheetto permit it to bedelivered onto the table.

. 4. In a sheet delivery apparatus .for printing machines, a sheetreceiving table, a relatively fiXed endless delivery carrier, arelatively ixed endless tape carrier for feeding sheets thereto, abodily reciprocating sheet support interposed between thev deliverycarrier and tape carrier, and means for `moving the sheet support withthe sheet out over the receiving table' at a certain speediand forwithdrawing the sheet support at a higher speed.

5. In a sheet delivery apparatus for printing machines, a sheetreceiving table, a' sheet delivery device, means for feeding sheets.ythereto and a reciprocating sheet supportl interposed between thedelivery device and presence of two witnesses, this thirteenth the sheetfeeding means, comprising a plu-A day of February A. D. 1911. lralityVof horizontally arranged racksJ gears meshing withsaid racks, a pinionxed to y HOWARD M. BARBER.

5 rotate with said gears and a cam operated bar having a rack meshingwith said pinion. Witnesses:

In testimony, that Iolaim the foregoing A. R. STILLMAN,

as my invention, I have signed my name in 4 lGr. 'Bunmgm

